3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $b = ''; echo isset($a); echo "\n\r"; echo isset($b); echo "\n\r"; echo "\n\r"; echo empty($a); echo "\n\r"; echo empty($b);
Output for 4.3.0 - 7.1.0
1 1 1